001
014
015 package com.liferay.portal.dao.db;
016
017 import com.liferay.portal.kernel.dao.db.DB;
018 import com.liferay.portal.kernel.dao.db.Index;
019 import com.liferay.portal.kernel.dao.jdbc.DataAccess;
020 import com.liferay.portal.kernel.io.unsync.UnsyncBufferedReader;
021 import com.liferay.portal.kernel.io.unsync.UnsyncStringReader;
022 import com.liferay.portal.kernel.util.StringBundler;
023 import com.liferay.portal.kernel.util.StringUtil;
024 import com.liferay.portal.util.PropsValues;
025
026 import java.io.IOException;
027
028 import java.sql.Connection;
029 import java.sql.PreparedStatement;
030 import java.sql.ResultSet;
031 import java.sql.SQLException;
032
033 import java.util.ArrayList;
034 import java.util.List;
035
036
041 public class MySQLDB extends BaseDB {
042
043 public static DB getInstance() {
044 return _instance;
045 }
046
047 @Override
048 public String buildSQL(String template) throws IOException {
049 template = convertTimestamp(template);
050 template = replaceTemplate(template, getTemplate());
051
052 template = reword(template);
053 template = StringUtil.replace(template, "\\'", "''");
054
055 return template;
056 }
057
058 @Override
059 public List<Index> getIndexes(Connection con) throws SQLException {
060 List<Index> indexes = new ArrayList<Index>();
061
062 PreparedStatement ps = null;
063 ResultSet rs = null;
064
065 try {
066 StringBundler sb = new StringBundler(4);
067
068 sb.append("select distinct(index_name), table_name, non_unique ");
069 sb.append("from information_schema.statistics where ");
070 sb.append("index_schema = database() and (index_name like ");
071 sb.append("'LIFERAY_%' or index_name like 'IX_%')");
072
073 String sql = sb.toString();
074
075 ps = con.prepareStatement(sql);
076
077 rs = ps.executeQuery();
078
079 while (rs.next()) {
080 String indexName = rs.getString("index_name");
081 String tableName = rs.getString("table_name");
082 boolean unique = !rs.getBoolean("non_unique");
083
084 indexes.add(new Index(indexName, tableName, unique));
085 }
086 }
087 finally {
088 DataAccess.cleanUp(null, ps, rs);
089 }
090
091 return indexes;
092 }
093
094 @Override
095 public boolean isSupportsDateMilliseconds() {
096 return _SUPPORTS_DATE_MILLISECONDS;
097 }
098
099 @Override
100 public boolean isSupportsUpdateWithInnerJoin() {
101 return _SUPPORTS_UPDATE_WITH_INNER_JOIN;
102 }
103
104 protected MySQLDB() {
105 super(TYPE_MYSQL);
106 }
107
108 @Override
109 protected String buildCreateFileContent(
110 String sqlDir, String databaseName, int population)
111 throws IOException {
112
113 String suffix = getSuffix(population);
114
115 StringBundler sb = new StringBundler(14);
116
117 sb.append("drop database if exists ");
118 sb.append(databaseName);
119 sb.append(";\n");
120 sb.append("create database ");
121 sb.append(databaseName);
122 sb.append(" character set utf8;\n");
123 sb.append("use ");
124 sb.append(databaseName);
125 sb.append(";\n\n");
126 sb.append(getCreateTablesContent(sqlDir, suffix));
127 sb.append("\n\n");
128 sb.append(readFile(sqlDir + "/indexes/indexes-mysql.sql"));
129 sb.append("\n\n");
130 sb.append(readFile(sqlDir + "/sequences/sequences-mysql.sql"));
131
132 return sb.toString();
133 }
134
135 @Override
136 protected String getServerName() {
137 return "mysql";
138 }
139
140 @Override
141 protected String[] getTemplate() {
142 return _MYSQL;
143 }
144
145 @Override
146 protected String reword(String data) throws IOException {
147 UnsyncBufferedReader unsyncBufferedReader = new UnsyncBufferedReader(
148 new UnsyncStringReader(data));
149
150 boolean createTable = false;
151
152 StringBundler sb = new StringBundler();
153
154 String line = null;
155
156 while ((line = unsyncBufferedReader.readLine()) != null) {
157 if (StringUtil.startsWith(line, "create table")) {
158 createTable = true;
159 }
160 else if (line.startsWith(ALTER_COLUMN_NAME)) {
161 String[] template = buildColumnNameTokens(line);
162
163 line = StringUtil.replace(
164 "alter table @table@ change column @old-column@ " +
165 "@new-column@ @type@;",
166 REWORD_TEMPLATE, template);
167 }
168 else if (line.startsWith(ALTER_COLUMN_TYPE)) {
169 String[] template = buildColumnTypeTokens(line);
170
171 line = StringUtil.replace(
172 "alter table @table@ modify @old-column@ @type@;",
173 REWORD_TEMPLATE, template);
174 }
175 else if (line.startsWith(ALTER_TABLE_NAME)) {
176 String[] template = buildTableNameTokens(line);
177
178 line = StringUtil.replace(
179 "rename table @old-table@ to @new-table@;",
180 RENAME_TABLE_TEMPLATE, template);
181 }
182
183 int pos = line.indexOf(";");
184
185 if (createTable && (pos != -1)) {
186 createTable = false;
187
188 line =
189 line.substring(0, pos) + " engine " +
190 PropsValues.DATABASE_MYSQL_ENGINE + line.substring(pos);
191 }
192
193 sb.append(line);
194 sb.append("\n");
195 }
196
197 unsyncBufferedReader.close();
198
199 return sb.toString();
200 }
201
202 private static final String[] _MYSQL = {
203 "##", "1", "0", "'1970-01-01'", "now()", " longblob", " longblob",
204 " tinyint", " datetime", " double", " integer", " bigint", " longtext",
205 " longtext", " varchar", " auto_increment", "commit"
206 };
207
208 private static final boolean _SUPPORTS_DATE_MILLISECONDS = false;
209
210 private static final boolean _SUPPORTS_UPDATE_WITH_INNER_JOIN = true;
211
212 private static MySQLDB _instance = new MySQLDB();
213
214 }